108 patients who underwent total hip arthroplasty (THA) were analyzed to examine the influence of socioeconomic data and preoperative patient data on THA outcomes. Participants were randomized to receive two different implant stems (Co-Cr stem or proximally coated titanium stem) and were assessed using several different measures of THA outcomes. Clinical outcomes did not differ between stem types. The study demonstrated that socioeconomic factors and patient preoperative date had a significant predictive effect on THA outcomes and called for further research on the subject.